Siphon-discharge apparatus



March 28, 19.39. M. KOLARRK S IPHON -DI S CHARGE APPARATUS Filed S pt. 1, 1937 WN W Patented Mar. 28, 1939 OFFIQE Application September 1, 1937, Serial No. 162,037 In Austria September 6,. 1936 Claims.

This invention relates to siphon-discharge apparatus for liquid containers, more particularly for the cisterns of water-closet flushing systems, and has for its object on the one hand to obvi- 5 ate certain drawbacks attendant on the hitherto used devices of this nature, and on the other hand to provide for the discharging of a small quantity or of a larger quantity of liquid, as required, with reliability of functioningand ready 0 adjustability. Broadly, the invention consists in the employment of a vessel which is vertically slidable in the cistern along the siphon, and which is provided with holes at the side through which it communicates, in the raised position, with the head portion of the siphon, while this latter is covered over by the Walls of the vessel when the vessel is in the lowered position. The liftable Vessel, which preferably takes the form of a tank open at the top, and which has apertures near the bottom through which it communicates with the cistern, has its cavitysubdivided in accordance with the invention, in that the portion of the same adjoining the head portion of the siphon is bounded by a roof closing it off on top and by a side wall extending downwards from the roof.

By virtue of this construction of the siphon-discharge apparatus it becomes possible, according to need, either to empty the cistern completely for the purpose of obtaining an abundant flushing action or to discharge only part of the water from the cistern when reduced flushing action is desired. The adjustment of the quantity of water discharged for reduced flushing action is effected by varying the depth to which the partition dividing up the cavity of the liftable vessel is immersed. Types of siphon-discharge apparatus for large and small flush are already known, but the hitherto used devices do not function with the requisite accuracy, and are in many cases unsatisfactory for the reason that valves which are intended to admit air into the siphon device for the purpose of interrupting the discharge do not fit perfectly tightly when the setting is for normal flushing discharge, with the result that the flushing action is robbed of the desired force. With the new siphon-discharge apparatus the reduced flushing action is by no means achieved at the expense of the force of the flushing action when the full discharge is used, but both the large and the small flush are effected in an equally faultless manner and with the same force as with a siphon-discharge apparatus of conventional design. The small flush is adjusted to a certain definite quantity of water discharged; the large flush may be interrupted at any time by renewed pulling up of the liftable vessel, so that practically speaking any desired fraction of the contents of the cistern can be discharged. Both these features are particularly favourable in their effect as regards the economy and saving achieved by the siphon-discharge apparatus. In addition, the apparatus according to the invention has the advantage that an undesired trickling away of the contents of the cistern through the discharge pipe is not possible. i

A form of construction of the invention is shown, by way of example, in the accompanying drawing representing the new siphon-discharge apparatus in vertical section.

Referring to the drawing, the cistern 1 has a central bottom aperture adjoining which is the discharge pipe 2. The siphon extending into the interior of the cistern constitutes: a continuation of this pipe. The siphon consists of an inner tube 3 which is open-ended top and bottom and extends somewhat above the normal level of the water in the cistern, and of an outer tube 4 surrounding the tube 3, which likewise has an aperture 5 in its upper end wall, and which at its lower end is provided with a circle of holes ll through which the contents of the cistern can pass directly into the siphon. The tubes 3 and 4 are preferably cast in one piece and firmly connected with a bracket 6 which serves to support the two-armed lever l for the actuation of the siphon-discharge apparatus. A cup-shaped vessel 8, which is provided in the middle with a reentrant portion 3 of cylindrical shape open at the bottom and closed at the top, is so fitted over the siphon that the cylindrical re-entrant portion surrounds the siphon on all sides. At the same time the inner surface of the re-entrant portion fits relatively tightly against the cylindrical outer surface of the siphon. The top of the re-entrant portion of the cupped vessel, which serves to close over the aperture 5 in the top of the siphon, is preferably furnished with a rubber gasket ID. The vessel 8 is vertically slidable on the siphon member and is suspended from the lever 1 so that it can be raised and lowered by this latter. The cylindrical re-entrant portion of the vessel 8 is provided, in the upper part of its envelope, with apertures l2 through which, when the vessel 8 is inthe raised position, water can flow from the vessel through the aperture 5 into the siphon. In the lower part of the envelope of the cylindrical re-entrant portion of the vessel 8, near the bottom. of the latter, there is likewise provided a circle of openings IS. The interior of the vessel 8 is divided up by a cylindrical partition [4. The

portion of the interior adjacent the siphon is closed at the top, while the remaining portion of the vessel is not closed over. On the partition I4 there is fitted, telescope-fashion, a cylindrical sleeve I5. By means of this sleeve the partition between the two separated chambers pertaining to the vessel 8 may be lengthened downwards to any desired extent. The chamber inside the partition may be vented by means of a valve I6 situated at the top. The valve body merges in a downwardly extending piston I! which works in a vertically disposed sleeve I8 extending down through the bottom of the vessel 8. A pin I9 attached to the bracket 6 extends from below into the sleeve I8 and thus prevents the vessel 8 from swivelling. In addition, the pin l9 serves to lift and open the valve l6 through the intermediary of the piston I! when the vessel is lowered. The sleeve I8 has in its uppermost part apertures 20 through which communication is established between the valve and the covered chamber disposed within the partition I4.

In the cylindrical outer wall of the siphon there is provided, approximately half way up, a horizontal channel 2 I From this latter there proceed, at larger intervals, vertical channels or grooves 22 down as far as the lower part of the siphon, which is of smaller diameter than the remainder of the outer wall of the siphon. This part of the siphon ends on a level with the top of the apertures I3 when the vessel 8 is in the lowered position. The channel 2i is on a level with the apertures I 3 when the vessel 8 is in the raised position. The channels 22 are so arranged that they are each situated between two of the apertures l3 in the liftable vessel.

The cistern is filled'with water, through a valve operated by a fioat not shown in the drawing, to a level which is somewhat below the top edge of the tube 3. To empty the cistern I the two-armed lever I is rocked in a known manner by means of a pulling chain or the like, so that it lifts the vessel 8. The lift of the vessel amounts to about 5 7 cm., so that the apertures I2 are raised clear of the upper rim of the siphon, and water can flow from the vessel 8 through the aperture 5 into the interior of the siphon tube 3 and thence into the discharge pipe 2. The out-flowing water sets up a vacuum in the siphon and causes the level of the liquid in the space between the inner tube 3 and the outer tube 4 of the siphon to rise until the liquid flows out of this space through the tube 3. Owing to the resulting siphon action the water contained in the cistern I will then be discharged in its entirety through the apertures II and the outer and the inner siphon chambers, provided the vessel 8 is lowered again in time so that no air can enter the upper siphon chamber'through the apertures I2 and the aperture 5. If, however, the vessel 8 is kept raised water will only continue to flow out of the cistern I until the level of the water therein reaches the lower end of the sleeve I5. For at this moment air enters the portion of the vessel 8 partitioned o-iT by the wall I4, and passes thence through the apertures I 2 into the siphon with the result that the discharge of water is interrupted. Thus the large and small flush can be achieved by pulling for a short time or for a long time, respectively, at the pulling chain of the siphon I. The apertures II, l3 and I5 are so determined as to their size and number that a sufiiciently rapid passage of water through the same during the flushing operation is ensured. In order to prevent water from flowing out of the vessel 8 during the lifting of the same the apertures l3 are closed over, during the lifting operation, by the portions of the wall of the siphon situated between the channels 22. The lifted vessel 8 communicates however again with the cistern I through the apertures I3, channel 2|, and the grooves 22.

I claim:--

1. In a flushing water cistern, more particularly for water closets, a siphon rigidly affixed to the base of the water cistern and having an aperture in its head portion, and a liquid receptacle including a. wall vertically slidable along the said siphon, apertures in the wall adjacent the siphon, the said receptacle being adapted in its lowered position to cover up the said apertures and in its raised position to disclose said apertures for communication with the siphon aperture.

2. In a flushing water cistern, a siphon having an aperture in its head portion, a vessel including a wall slidable on said siphon, apertures in said wall adapted for communication with the aperture in the head portion of the siphon, and additional apertures in the base portion of the vessel for communication with the water cistern.

3. In a flushing water cistern, a siphon having an aperture in its head portion, a cup-shaped vessel open at the top and including a wall vertically slidable along said siphon, and apertures in the wall thereof adjacent said siphon.

4. In a flushing water cistern, a siphon having an aperture in its head portion, a vessel including a wall vertically slidable along the said siphon, apertures in said wall thereof adjacent said siphon, and a partition wall in said vessel dividing the same into adjacent chambers, said chambers having communication at the base portion of the partition wall.

5. In a flushing water cistern as claimed in claim 4, said partition wall being vertically ad- Justable.

6. A flushing water cistern as claimed in claim 4, in combination with a venting valve in the upper portion of the said partition wall, and means for opening said valve when said vessel is in the lowered position.

'7. In a flushing water cistern, a siphon having an aperture in its head portion, a cup-shaped vessel including a wall vertically slidable along the said siphon, and integral with the bottom of said vessel a re-entrant body closed at the top and open at the bottom, said vessel being adapted to be fitted over the said siphon and containing apertures in the side walls.

8. In a flushing water cistern, a siphon formed of two concentric cylindrical tubes open at the top, a cup-shaped vessel vertically slidable along the said siphon, and a cylindrical wall integrally aflixed to said cup-shaped vessel to closely surround the outer of said tubes, said wall having a re-entrant portion to divide the vessel into adjacent chambers.

9. In a flushing water cistern, a siphon having an aperture in its head portion, a vessel including a wall slidable along said siphon, apertures in the wall adjacent the said siphon, and a partition wall in said vessel consisting of fitted members slidably one upon the other.

10. A flushing water cistern as claimed in claim 8, in combination with a tubular sleeve in said vessel, and a pin secured to said cistern and extending into said sleeve, whereby rotation of said vessel is prevented.

11. A flushing cistern as claimed in claim 8,

in combination with a vent valve responsive to movement of said vessel upon the siphon.

12. A flushing cistern as claimed in claim 8, in combination with vent valve mechanism-ineluding a stationary pin affixed to said cistern and a cooperating valve member adapted for venting operation when said vessel is lowered upon said siphon.

13. In a flushing water cistern, a siphon having an aperture in its head portion, a vessel including a wall vertically slidable on said siphon, apertures in the upper portion of the wall for communication with the siphon aperture when the vessel is in its upper position, and additional apertures in the base portion of said vessel for communication with the cistern when the vessel is in its lower position.

14. In a flushing water cistern, a siphon formed of two concentric cylindrical tubes open at the top, a cup-shaped vessel vertically slidable along said siphon, a vertical wall integral with the bottom of said vessel and closely surrounding the outer of said tubes, a re-entrant body portion on said vessel, apertures in the upper part of the vessel, the outer wall of said siphon being pro wall and in the vicinity of the bottom of a :1

vided with channels adapted to disclose the, said apertures in the vicinity of the bottom of. said vessel in the upper and lower end position of said liftable vessel and to allow water to by-pass from said cistern into said vessel.

15. In a flushing water cistern a siphon formed of two concentric cylindrical tubes open at the top, a cup-shaped vessel vertically slidable along said siphon, integral with the bottom of said vessel and closely surrounding the outer of said tubes a re-entrant body having apertures in its upper part and in the vicinity of the bottom of said vessel, the outer wall of said siphon being provided with horizontal channels at a level corresponding to its uppermost and lowermost position of the said apertures in the said re-entrant body in the vicinity of the bottom of said vessel, and further provided with vertical channels interconnecting said horizontal channels and disposed between said apertures in said re-entrant body.

MICHAEL KOLARIK. 

